20909967

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{23311}}^1$

素因数の和:23350

約数の個数: 16

約数和(自身を含む): 31331328

約数和(自身を除く): 10421361

約数列:

[1, 3, 13, 23, 39, 69, 299, 897, 23311, 69933, 303043, 536153, 909129, 1608459, 6969989, 20909967]

約数ペア:

[(1, 20909967), (3, 6969989), (13, 1608459), (23, 909129), (39, 536153), (69, 303043), (299, 69933), (897, 23311)]